// widgets/pin_verification_dialog.dart - Version mise à jour
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

class PinVerificationDialog extends StatefulWidget {
  final String agentName;
  final String serviceName;
  final double baseAmount;
  final double fees;
  final double totalAmount;
  final double agentBalance; // Nouveau paramètre
  final Function(String) onPinConfirmed;
  final VoidCallback onCancel;

  const PinVerificationDialog({
    super.key,
    required this.agentName,
    required this.serviceName,
    required this.baseAmount,
    required this.fees,
    required this.totalAmount,
    required this.agentBalance, // Nouveau paramètre requis
    required this.onPinConfirmed,
    required this.onCancel,
  });

  @override
  _PinVerificationDialogState createState() => _PinVerificationDialogState();
}

class _PinVerificationDialogState extends State<PinVerificationDialog> {
  final TextEditingController _pinController = TextEditingController();
  bool _isObscured = true;
  bool _isLoading = false;
  String? _errorMessage;

  // Formatter pour les montants
  String _formatAmount(double amount) {
    final formatter = NumberFormat('#,###', 'fr_FR');
    return formatter.format(amount);
  }

  // Vérifier si l'agent a suffisamment de solde
  bool get _hasSufficientBalance {
    return widget.agentBalance >= widget.totalAmount;
  }

  @override
  void dispose() {
    _pinController.dispose();
    super.dispose();
  }

  Future<void> _handlePinConfirmation() async {
    if (_pinController.text.length < 4) {
      setState(() {
        _errorMessage = 'Le PIN doit contenir au moins 4 chiffres';
      });
      return;
    }

    if (!_hasSufficientBalance) {
      setState(() {
        _errorMessage = 'Solde insuffisant pour effectuer cette transaction';
      });
      return;
    }

    setState(() {
      _isLoading = true;
      _errorMessage = null;
    });

    try {
      // Simuler une vérification (remplacez par votre logique de vérification)
      await Future.delayed(const Duration(seconds: 1));

      widget.onPinConfirmed(_pinController.text);
    } catch (e) {
      setState(() {
        _errorMessage = 'Erreur lors de la vérification du PIN';
        _isLoading = false;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    final size = MediaQuery.of(context).size;
    final isSmallScreen = size.width < 360;

    return Dialog(
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
      elevation: 0,
      backgroundColor: Colors.transparent,
      child: Container(
        constraints: BoxConstraints(
          maxWidth: size.width * 0.9,
          maxHeight: size.height * 0.8,
        ),
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.circular(16),
          boxShadow: [
            BoxShadow(
              color: Colors.black.withOpacity(0.1),
              spreadRadius: 0,
              blurRadius: 10,
              offset: const Offset(0, 4),
            ),
          ],
        ),
        child: SingleChildScrollView(
          child: Padding(
            padding: EdgeInsets.all(isSmallScreen ? 16 : 24),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.center,
              children: [
                // En-tête avec icône de sécurité
                Container(
                  padding: const EdgeInsets.all(16),
                  decoration: BoxDecoration(
                    color: const Color(0xFF006699).withOpacity(0.1),
                    shape: BoxShape.circle,
                  ),
                  child: const Icon(
                    Icons.security,
                    size: 32,
                    color: Color(0xFF006699),
                  ),
                ),
                const SizedBox(height: 16),

                // Titre
                Text(
                  'Confirmation sécurisée',
                  style: TextStyle(
                    fontSize: isSmallScreen ? 20 : 24,
                    fontWeight: FontWeight.bold,
                    color: Colors.black87,
                  ),
                  textAlign: TextAlign.center,
                ),

                const SizedBox(height: 8),

                Text(
                  'Vérifiez les détails et confirmez avec votre PIN',
                  style: TextStyle(
                    fontSize: isSmallScreen ? 14 : 16,
                    color: Colors.black54,
                  ),
                  textAlign: TextAlign.center,
                ),

                const SizedBox(height: 24),

                // Informations de la transaction
                Container(
                  padding: const EdgeInsets.all(16),
                  decoration: BoxDecoration(
                    color: Colors.grey[50],
                    borderRadius: BorderRadius.circular(12),
                    border: Border.all(color: Colors.grey[200]!),
                  ),
                  child: Column(
                    children: [
                      // Service
                      _buildDetailRow(
                        icon: Icons.business_center,
                        label: 'Service',
                        value: widget.serviceName,
                        isSmallScreen: isSmallScreen,
                      ),

                      if (widget.baseAmount > 0) ...[
                        const SizedBox(height: 12),
                        _buildDetailRow(
                          icon: Icons.account_balance_wallet,
                          label: 'Montant à payer',
                          value: '${_formatAmount(widget.baseAmount)} FCFA',
                          isSmallScreen: isSmallScreen,
                        ),
                      ],

                      if (widget.fees > 0) ...[
                        const SizedBox(height: 12),
                        _buildDetailRow(
                          icon: Icons.receipt_long,
                          label: 'Frais',
                          value: '${_formatAmount(widget.fees)} FCFA',
                          isSmallScreen: isSmallScreen,
                        ),
                      ],

                      const SizedBox(height: 12),
                      Divider(color: Colors.grey[300]),
                      const SizedBox(height: 12),

                      // Total
                      _buildDetailRow(
                        icon: Icons.payments,
                        label: 'Total',
                        value: '${_formatAmount(widget.totalAmount)} FCFA',
                        isTotal: true,
                        isSmallScreen: isSmallScreen,
                      ),

                      const SizedBox(height: 16),

                      // Solde agent avec indicateur de suffisance
                      Container(
                        padding: const EdgeInsets.all(12),
                        decoration: BoxDecoration(
                          color:
                              _hasSufficientBalance
                                  ? Colors.green[50]
                                  : Colors.red[50],
                          borderRadius: BorderRadius.circular(8),
                          border: Border.all(
                            color:
                                _hasSufficientBalance
                                    ? Colors.green[200]!
                                    : Colors.red[200]!,
                          ),
                        ),
                        child: Row(
                          children: [
                            Icon(
                              _hasSufficientBalance
                                  ? Icons.check_circle
                                  : Icons.warning,
                              color:
                                  _hasSufficientBalance
                                      ? Colors.green[600]
                                      : Colors.red[600],
                              size: 20,
                            ),
                            const SizedBox(width: 8),
                            Expanded(
                              child: Column(
                                crossAxisAlignment: CrossAxisAlignment.start,
                                children: [
                                  Text(
                                    'Votre solde',
                                    style: TextStyle(
                                      fontSize: 12,
                                      color: Colors.grey[600],
                                      fontWeight: FontWeight.w500,
                                    ),
                                  ),
                                  Text(
                                    '${_formatAmount(widget.agentBalance)} FCFA',
                                    style: TextStyle(
                                      fontSize: 16,
                                      fontWeight: FontWeight.bold,
                                      color:
                                          _hasSufficientBalance
                                              ? Colors.green[700]
                                              : Colors.red[700],
                                    ),
                                  ),
                                  if (!_hasSufficientBalance)
                                    Text(
                                      'Solde insuffisant',
                                      style: TextStyle(
                                        fontSize: 12,
                                        color: Colors.red[600],
                                        fontStyle: FontStyle.italic,
                                      ),
                                    ),
                                ],
                              ),
                            ),
                          ],
                        ),
                      ),
                    ],
                  ),
                ),

                const SizedBox(height: 24),

                // Champ PIN
                Text(
                  'PIN de sécurité',
                  style: TextStyle(
                    fontSize: isSmallScreen ? 14 : 16,
                    fontWeight: FontWeight.w600,
                    color: Colors.black87,
                  ),
                ),

                const SizedBox(height: 8),

                TextField(
                  controller: _pinController,
                  keyboardType: TextInputType.number,
                  obscureText: _isObscured,
                  maxLength: 6,
                  enabled: !_isLoading && _hasSufficientBalance,
                  decoration: InputDecoration(
                    hintText: 'Saisissez votre PIN',
                    prefixIcon: const Icon(
                      Icons.lock,
                      color: Color(0xFF006699),
                    ),
                    suffixIcon: IconButton(
                      icon: Icon(
                        _isObscured ? Icons.visibility : Icons.visibility_off,
                        color: Colors.grey,
                      ),
                      onPressed: () {
                        setState(() {
                          _isObscured = !_isObscured;
                        });
                      },
                    ),
                    border: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(12),
                      borderSide: const BorderSide(color: Color(0xFFE0E7FF)),
                    ),
                    enabledBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(12),
                      borderSide: const BorderSide(color: Color(0xFFE0E7FF)),
                    ),
                    focusedBorder: OutlineInputBorder(
                      borderRadius: BorderRadius.circular(12),
                      borderSide: const BorderSide(
                        color: Color(0xFF006699),
                        width: 2,
                      ),
                    ),
                    counterText: '',
                  ),
                  onSubmitted:
                      _hasSufficientBalance
                          ? (_) => _handlePinConfirmation()
                          : null,
                ),

                if (_errorMessage != null) ...[
                  const SizedBox(height: 8),
                  Container(
                    padding: const EdgeInsets.all(8),
                    decoration: BoxDecoration(
                      color: Colors.red[50],
                      borderRadius: BorderRadius.circular(8),
                      border: Border.all(color: Colors.red[200]!),
                    ),
                    child: Row(
                      children: [
                        Icon(
                          Icons.error_outline,
                          color: Colors.red[600],
                          size: 16,
                        ),
                        const SizedBox(width: 8),
                        Expanded(
                          child: Text(
                            _errorMessage!,
                            style: TextStyle(
                              color: Colors.red[600],
                              fontSize: 12,
                            ),
                          ),
                        ),
                      ],
                    ),
                  ),
                ],

                const SizedBox(height: 24),

                // Boutons
                Row(
                  children: [
                    Expanded(
                      child: TextButton(
                        onPressed: _isLoading ? null : widget.onCancel,
                        style: TextButton.styleFrom(
                          padding: EdgeInsets.symmetric(
                            vertical: isSmallScreen ? 12 : 16,
                          ),
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(12),
                          ),
                        ),
                        child: Text(
                          'Annuler',
                          style: TextStyle(
                            fontSize: isSmallScreen ? 14 : 16,
                            color: Colors.grey[600],
                          ),
                        ),
                      ),
                    ),
                    const SizedBox(width: 12),
                    Expanded(
                      child: ElevatedButton(
                        onPressed:
                            (_isLoading || !_hasSufficientBalance)
                                ? null
                                : _handlePinConfirmation,
                        style: ElevatedButton.styleFrom(
                          backgroundColor: const Color(0xFF006699),
                          foregroundColor: Colors.white,
                          padding: EdgeInsets.symmetric(
                            vertical: isSmallScreen ? 12 : 16,
                          ),
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(12),
                          ),
                          elevation: 0,
                        ),
                        child:
                            _isLoading
                                ? SizedBox(
                                  height: isSmallScreen ? 16 : 20,
                                  width: isSmallScreen ? 16 : 20,
                                  child: const CircularProgressIndicator(
                                    strokeWidth: 2,
                                    valueColor: AlwaysStoppedAnimation<Color>(
                                      Colors.white,
                                    ),
                                  ),
                                )
                                : Text(
                                  'CONFIRMER',
                                  style: TextStyle(
                                    fontSize: isSmallScreen ? 14 : 16,
                                    fontWeight: FontWeight.w600,
                                  ),
                                ),
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  Widget _buildDetailRow({
    required IconData icon,
    required String label,
    required String value,
    bool isTotal = false,
    required bool isSmallScreen,
  }) {
    return Row(
      children: [
        Icon(
          icon,
          size: isSmallScreen ? 16 : 18,
          color: isTotal ? const Color(0xFF006699) : Colors.grey[600],
        ),
        const SizedBox(width: 8),
        Expanded(
          child: Text(
            label,
            style: TextStyle(
              fontSize: isSmallScreen ? 13 : 14,
              fontWeight: isTotal ? FontWeight.w600 : FontWeight.w500,
              color: isTotal ? const Color(0xFF006699) : Colors.grey[700],
            ),
          ),
        ),
        Text(
          value,
          style: TextStyle(
            fontSize: isSmallScreen ? 13 : 14,
            fontWeight: isTotal ? FontWeight.bold : FontWeight.w600,
            color: isTotal ? const Color(0xFF006699) : Colors.black87,
          ),
        ),
      ],
    );
  }
}